Page 1077 - Softbound_Edition_19_en

Proportional
Proportional pressure reducing valve
pressure reducing valves Proportional pressure reducing valve

CHARACTERISTICS Oil viscosity ν = 30 mm /s Proportional pressure reducing cartridge
2
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics ◆ pilot operated 7 ⁄8 “-14 UNF
red
red
(Maximal adjustable pressure) (Minimal adjustable pressure) ◆ Q = 60 l/min Wandfluh standard
max
p [bar] p [bar] ◆ p = 400 bar
max
60 K0970 16 K0971 ◆ p = 350 bar
N red max

45 12
P N red = 48 bar
30 P N red = 25 bar 8
DESCRIPTION APPLICATION
15 4 Pilot operated proportional pressure reducing valve in screw-in The electrical remote control in conjunction with process controls
cartridge construction for cavity according to Wandfluh standard. allows economical solutions with repeatable processes. The
0 0
4 3 2 1 0 1 2 3 4 4 3 2 1 0 1 2 3 4 Proportionally to the solenoid current, the solenoid force and the screw-in cartridge is perfectly suitable for installation in control
A  T Q [l/min] P  A A  T Q [l/min] P  A pressure in port A (1) rise. The valve functions practically indepen- blocks. For machining the cartridge cavity in steel and aluminum
dently of the pressure in port P (2). Pressure increase in the consu- blocks, cavity tools are available (hire or purchase). Please refer to
= f (l) Pressure adjustment characteristics Q = f (p ) Pilot- and leakage volume flow characteristice

p red st + L red mer port A (1) to above the adjusted value, e.g. through an active the data sheets in register 2.13.
[at Q = 0 l/min] / (static) [P (2) → T (3)] consumer, is avoided by discharging excess oil to the tank T (3).
p [bar] Q [cm /min] With the solenoid deenergised, the oil flows freely from port P (2) to
3
60 K0972 160 K0973
consumer port A (1). For the control, Wandfluh proportional ampli -
45 P N red = 48 bar 120 fiers are available (see register 1.13).
P N red = 25 bar
30 80
15 40
0 0
0 10 20 30 40 50 60 70 80 90 100 l [%] 0 50 100 150 200 250 300 350 p [bar]
A  T Q [l/min] P  A P N red = 25 bar
P N red = 48 bar
SYMBOL ACTUATION
Actuation Proportional solenoid, wet pin push
(A) 1 type, pressure tight
Execution W.S37 / 19 x 50 (Data sheet 1.1-173)
DIMENSIONS / SECTIONAL DRAWINGS PARTS LIST M.S35 / 19 x 50 (Data sheet 1.1-174)
Connection Connector socket EN 175301 – 803
20 Position Article Description (P) 2 (T) 3 Connector socket AMP Junior-Timer
15 253.8000 Mounted screw with integrated Connector Deutsch DT04 – 2P
manual override HB 4,5
20 219.2002 Plug (black)
30 160.0060 O-ring ID 6,07 x 1,78
40 160.0071 O-ring ID 7,65 x 1,78
15 50 160.2204 O-ring ID 20,35 x 1,78
50
74
40 STANDARDS INSTALLATION NOTES
30 Cavity drawing acc. to
T(3) Wandfluh standard Cartridge cavity Wandfluh standard Mounting type Screw-in cartridge ⁄8 “-14 UNF
7
A(1) Solenoids DIN VDE 0580 Mounting position Any, preferably horizontal
Ø 11 Connection execution D EN 175301 – 803 Tightening torque M = 60 Nm Screw-in cartridge
D
P(2)
Protection class EN 60 529 M = 5 Nm knurled nut
D
Contamination efficiency ISO 4406 M = 9,5 Nm HB0
D
M = 5,5 Nm HB4,5
70,3 14 T(3) D
P(2)
A(1)

A(1)
ACCESSORIES A(1)
Proportional amplifier register 1.13
For detailed cavity drawing
Technical explanation see data sheet 1.0-100 see data sheet 2.13-1044
P(2) T(3)

Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.3-671E 2/2 www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 19 19 2.3-672 E
CH-3714 Frutigen Edition 16 18
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